This film is adapted from the real background of the search and rescue dog "Ding-Dang". It tells the story of Yang Qi, a fire fighter who retired early due to injury during an earthquake rescue, and was forced to reluctantly part with his search-and-rescue dog "Ding-Dang" who had been trained for many years. Years later, the search-and-rescue dog "Ding Dang" sneaked out of the recuperation base and became a stray dog. It spent his whole life looking for his original trainer, Yang Qi

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